for further information contact your local stmicroelectronics sales office. december 2013 docid025626 rev 1 1/4 STEVAL-ISB014V2 battery monitor with alarm output for gas gauge applications based on the stc3115 data brief features ? 0.25% accuracy battery voltage monitoring ? coulomb counter and voltage-mode gas gauge operations ? robust initial open-circuit-voltage (ocv) measurement at power-up with debounce delay ? low battery level alarm output with programmable thresholds ? internal temperature sensor ? battery swap detection ? low power ? 45 a in power-saving mode ? 2 a max in standby mode ? 1.4 x 2.0 mm 10-bump csp package ? rohs compliant description the STEVAL-ISB014V2 product evaluation board is based on the stc3115. this device includes the hardware functions required to implement a low-cost gas gauge for battery monitoring. it uses current sensing, coulomb counting and accurate battery voltage measurements to estimate the state-of-charge (soc) of the battery. an internal temperature sensor simplifies implementation of temperature compensation. an alarm output signals a low soc condition and can also indicate low battery voltage. the alarm threshold levels are programmable. the stc3115 offers advanced features to ensure high performance gas measurement in all application conditions. the STEVAL-ISB014V2 evaluation board is suitable for portable medical equipment, mobile phones, multimedia players and digital cameras. www.st.com
schematic diagram STEVAL-ISB014V2 2/4 docid025626 rev 1 1 schematic diagram figure 1. STEVAL-ISB014V2 circuit schematic scl sda cg+ 220nf c2 rcg 10m alm 1uf vcc c1 r1 0 vin rup1 4.7k rup2 4.7k rup3 4.7k vcc a1 alm b1 sda c1 scl c3 rstio d1 gnd cg d3 b batd vin a3 u1 stc3115_csp vcc b3 9 8 7 6 5 4 3 2 1 10 p1 9 8 7 6 5 4 3 2 1 10 header 10 header 10 p2 alm sda scl gnd cg+ vin vcc rstio rstio batd batd vcc rup4 1m rup5 4.7k r2 1k r3 1k r4 1k am17541v1
docid025626 rev 1 3/4 STEVAL-ISB014V2 revision history 4 2 revision history table 1. document revision history date revision changes 01-dec-2013 1 initial release.
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